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Biology Chapters 1 and 2 Test

True/False
Indicate whether the statement is true or false.
 

 1. 

The study of biology includes things that were once living and those alive today.
 

 2. 

It is important to study the genetic makeup of other organisms because information in their genetic makeup may hold information about our own.
 

 3. 

A single entity has been discovered that shows many of the characteristics of living things including growth, organization, and the ability to maintain homeostasis. However, because it does not reproduce, it is not considered a living thing.
 

 4. 

Peer review allows others in the field to assess a scientist’s investigations and results.
 

 5. 

After observing tadpoles swimming in the water, you could infer that all amphibians have gills.
 

 6. 

Nitrogen is a limiting nutrient for many food webs because the element is relatively rare.
 

 7. 

All the biogeochemical cycles involve both biotic and abiotic reservoirs.
 

Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
 

 8. 

A bird fluffs its feathers to trap warm air close to its body.  The temperature of the air next to the bird’s skin is a(n) abiotic factor. _________________________

 

 9. 

Photosynthetic autotrophs remove water from the air as part of one of the major biogeochemical cycles. _________________________

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 10. 

Which of the following are likely topics in a biology course?
a.
Why does the Texas horned lizard squirt blood out of its eyes?
b.
How is a banded pipefish able to hide in its environment of seaweeds?
c.
What chemicals cause plant stems to lengthen or flowers to bloom?
d.
All of these.
 

 11. 

Which of the following would most likely be the major focus of a biologist?
a.
bacteria found in hot springs
b.
the composition of water in hot springs
c.
the temperature of hot springs
d.
the location of hot springs
 

 12. 

A person studying a topic is presented with new information that conflicts with previous findings. What would a scientist do in this situation?
a.
ignore the new information
b.
argue against the new information
c.
evaluate the new information
d.
keep the new information to himself
 

 13. 

What is the basis of the metric measurement system?
a.
Its measures are based on divisions that are powers of ten.
b.
It is based on European measurement standards.
c.
It is the only scientific measurement system.
d.
It is based on the wavelength of krypton-86 radiation.
 

 14. 

Which best explains the importance of understanding science?
a.
It allows us to perform experiments on a variety of living things.
b.
It allows us to determine which endangered species are worth saving.
c.
It allows us to be educated in issues important in today’s world.
d.
It allows us to understand different ways of measuring things.
 

 15. 

Which of the following is an observation?
a.
You record the air temperature every day for a week.
b.
You propose that a cold front is approaching.
c.
You hypothesize that the temperature will increase tomorrow.
d.
You conclude that the season is changing.
 

 16. 

Which is an inference?
a.
You measure a plant’s height every day for a week.
b.
You give a plant the same amount of water every day.
c.
Every day for a week, you collect data on a plant’s movement.
d.
After watching a plant for a week, you determine it needs more sunlight.
 

 17. 

Tasha is testing the effect of blue-colored light on the growth of tomato plants. Which is the independent variable in this experiment?
a.
light color
c.
amount of light
b.
light intensity
d.
temperature of light
 

 18. 

A person studying a particular field has published her findings. The findings are not testable by others. This person is most likely studying which field?
a.
astrology
c.
chemistry
b.
biology
d.
physics
 

 19. 

Some birds are known as honey guides because they may be followed by humans to wild beehives. When the humans take honey from the hives, the birds are able to feast on the honey and bees, too. This type of relationship can best be described as ____.
a.
parasitism
c.
mutualism
b.
commensalism
d.
symbiosis
 

 20. 

Cougars are predators that often eat weakened or diseased animals. This is a description of the ____ of cougars.
a.
habitat
c.
niche
b.
community
d.
none of these
 

 21. 

Organisms with overlapping niches probably have which type of relationship?
a.
commensal
c.
mutualistic
b.
competitive
d.
parasitic
 

 22. 

How long are food chains?
a.
four steps long
c.
it varies with day length
b.
three steps long
d.
it varies with ecosystem
 

 23. 

Which process describes nitrogen fixation?
a.
animals eat plants containing nitrogen and return it to the soil through urination
b.
bacteria take nitrogen from the air and convert it to a form usable by plants
c.
organisms die and are decomposed into ammonia in the soil
d.
plants take nitrogen from the air and store it in their roots
 

 24. 

Your favorite plant is growing very slowly, and you would like to find some way to increase its growth rate.  Which of the following should you try increasing first?
a.
nitrogen
c.
sodium
b.
oxygen
d.
calcium
 

 25. 

Some farmers use manure on their crop fields.  How does this help the plants?
a.
protects them from intense sunlight
b.
keeps insects from eating the crops
c.
increases soil nitrogen and phosphorus levels
d.
increases soil oxygen and carbon dioxide levels
 

 26. 

Which of the following allows the flow of energy through an ecosystem to happen?
a.
abiotic factors
c.
evaporation
b.
cycling of nutrients
d.
predation
 

 27. 

Which location would most likely hold autotrophs that derive their energy from chemical compounds?
a.
swamp sediments
c.
grassland soil surface
b.
antarctic pools
d.
desert rocks
 

 28. 

One of the nutrient cycles moves from an atmospheric gaseous form to the soil through both abiotic and biotic processes, moves through the food web, then is returned to the soil or to the atmosphere.  Which cycle fits this description?
a.
carbon
c.
phosphorus
b.
nitrogen
d.
water
 

Short Answer
 

 29. 

Compare and contrast a food web and a food chain.
 

 30. 

Briefly describe the habitat and niche, highlighting their differences, of a mallard duck.
 

Essay
 

 31. 

A new entity has been found. Scientists are trying to determine if it is living or non-living. The entity has only the following characteristics: uses oxygen, requires energy, can move, and gets bigger over time. Evaluate the preceding characteristics of the substance and decide if it is alive or not. Defend your answer.
 

 32. 

Tyrone knows that using fertilizer will result in more blooms, but wants to know if it will affect a plant’s growth as well. Explain the design of an experiment that would answer this question.
 

 33. 

Discuss whether you think food webs change over time (for example, in the course of a year) and why. Suggest examples to back up your arguments.
 



 
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